diff --git a/src/telephonyevents.c b/src/telephonyevents.c
index 3fda15f7..64186aa9 100644
--- a/src/telephonyevents.c
+++ b/src/telephonyevents.c
@@ -152,11 +152,13 @@ mblk_t *rtp_session_create_telephone_event_packet(RtpSession *session, int start
  *
  *@return 0 on success.
  **/
-int rtp_session_add_telephone_event(
-    BCTBX_UNUSED(RtpSession *session), mblk_t *packet, uint8_t event, int end, uint8_t volume, uint16_t duration) {
-	mblk_t *mp = packet;
+int rtp_session_add_telephone_event(RtpSession *session,
+			mblk_t *packet, uint8_t event, int end, uint8_t volume, uint16_t duration)
+{
+	mblk_t *mp=packet;
 	telephone_event_t *event_hdr;
 
+	(void)session;
 	/* find the place where to add the new telephony event to the packet */
 	while (mp->b_cont != NULL)
 		mp = mp->b_cont;